#include<iostream>

using namespace std;

int main(int argc,char*argv[],char*env[])
{
    cout<<"hello linux!"<<endl;
    cout<<"hello linux!"<<endl;
    int i=0;
    for(;env[i];i++)
    {
        printf("[%d]:%s\n",i,env[i]);
    }
    return 0;
}
